Zhengzhou Winsen Electronics Technology C

Statement This manual copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the written permission, any part of this manual shall not be copied, translated, stored in database or retrieval system, also can’t spread through electronic, copying, record ways. Thanks for purchasing our product. In order to let customers use it better and reduce the faults caused by misuse, please read the manual carefully and operate it correctly in accordance with the instructions. If users disobey the terms or remove, disassemble, change the components inside of the sensor, we shall not...

Zhengzhou Winsen Electronics Technology Co., Ltd Particles Sensor Profile This sensor adopts advanced PM2.5 detection technology to detect PM2.5. PM2.5 detection adopts particle counting principle to detect the particles (diameter ≥1μm). Before delivery, the sensor has been aged, debuged, calibrated and has good consistency and high sensitivity. It has the PWM signal output, and it can be configured to be UART digital serial interface and customized IIC interface. Features High sensitivity, good stability for long time, calibrated before delivery, built-in heater to snift air automatically. It...

Zhengzhou Winsen Electronics Technology Co., Ltd Detection Principle Emission Source Optical receiver Output circuit 2 Heater Pins Definition Control pin(refer the detailed instructions) Fig4：Pins sketch Instructions 1.Heater:the heater is built-in and the heating makes air rise,causing the air outside flow into sensor inside. 2.What kind of particles can be detected: diameter ≥1μm, such as smoke, house dust, mold, pollen and spores. 3.Control pin: this pin is to control output mode.(Vacancy is PWM mode while GND is serial port mode .) 4.Output pins OUT2/ RXD: this pin is RXD in serial port mode...

Zhengzhou Winsen Electronics Technology Co., Ltd PM2.5 output wave in PWM mode Fig5.PM2.5 output wave in PWM mode NOTE：1.LT is the pulse width of low level in one period. 2.UT is the pulse width of one period. 3.Low pulse rate RT: RT=LT/ UT x100% The relationship between low pulse rate of output and particles number Low pulse rate % Fig6.The relationship of low pulse rate of output and particles number Leading gas sensing solutions supplier in China!

Zhengzhou Winsen Electronics Technology Co., Ltd The relationship between low pulse rate of output and dust particles concentration Low pulse rate % Particles Concentration Fig7.The relationship of PM2.5 low pulse rate of output and dust particles concentration NOTE：People usually use different levels (best,good,bad,worst) to describe the air quality condition. Program 1.High sensitivity Best：0.00%-2.00% Good：2.00%-4.00% bad：4.00%-6.00% Worst：＞6.00% Program 2.Good consistency Best：0.00%-4.00% Good：4.00%-8.00% Bad：8.00%-12.00% Worst：＞12.00% Leading gas sensing solutions

Zhengzhou Winsen Electronics Technology Co., Ltd Communication protocol 1.General Settings Stable 3. Baud rate Data byte Stop byte Check byte 2.Communication command Module sends the concentration value every other one second. Only send,no receive. Command as follow: 0 Start byte Detection type name code Unit (Low pulse rate) Integer part of low pulse rate Decimals part of low pulse rate Check value Stable 4. Note: 0x01 means that the PWM output mode with 1Hz. 3.Check and calculation /********************************************************************** * Funtion name: ucharFucCheckSum(uchar...

Zhengzhou Winsen Electronics Technology Co., Ltd Cautions 1.Installation must be vertically. 2.Organic solvents(including sillica gel and other adhesive),paint,pharmaceutical,oil and high concentration of target gases should be avoided. 3.Artificial air steam such as fan should be farm away.For example,when it is used in air refresher,it can’t be installed in front or back of fan.Any side of fan shell can be installed on, but ventilation opening on the shell is necessary to guarantee gas from outside flow in. 4.Don’t use it the places where there is vapour such as bathroom,or near to air humidifier....